Sunday, October 30, 2016

The Situation like the following when we was trying to install SIEBEL On RAC 12C its took 10 hours for importing 2 database which is usually takes 2 hours at max, storage was NFS , enabled DNFS for sure.

simulate the following case :-

On single node , 2 hours like usual.

On RAC 12c using DNFS file system 10 hours.

On RAC 12c using DNFS but single node of RAC took 10 hours.

On RAC 12c using local file system and single node 10 hours.

Install oracle 11gR2 RAC and try it again took 4 hours using ASM on DNFS.

Using SLOB didn't see anything related to storage issue.

After investigation and a lot of working without tuning on 12c it's took 1 Hour and 37 min.

Tuesday, October 11, 2016

OTN : Oracle Technology network or let me say OTN gather all of us no matter where you live in this world ? only one thing gather us our love to OTN.

OTN done so much things to all of us, one of things i love and most of the people in the community know that is Fusion middleware and i will write about Oracle Weblogic 12cR2 the documentation available here

Oracle Weblogic 12cR2 comes with different features such as the following:-

If will talk about them all it will be documentation not blog post therefore i will choose 2 or 3 topics.

Docker Certification

Oracle WebLogic Server 12.2.1 is certified to run inside a Docker container. Docker is a Linux-based container technology that enables you to quickly create lightweight clustered and non-clustered WebLogic Server domain configurations on a single host OS or virtual machines, for either development or production environments.

you can have access to github here and how to Run Weblogic on Docker check here

Multitenancy Support

Multitenancy in WebLogic Server provides a sharable infrastructure for use by multiple organizations. These organizations are a conceptual grouping of your own choosing, which you can think of as tenants. By allowing one domain to support multiple tenants, Weblogic Server Multitenant improves density and achieves a more efficient use of resources while eliminating the hurdles typically present when trying to share multiple applications: runtime cross-application impact, security differences, data co-mingling, and administrative challenges.

WebLogic Server MT enables an end to end multitenant infrastructure, including multitenancy from the load balancer to the middle tier and cache tier, and to the database tier. WebLogic Server MT extends the Oracle WebLogic Server Enterprise Edition and Oracle WebLogic Suite products

Monday, October 10, 2016

this post is questionnaire more than a technical, EBS startCD 51 released before 1 month and it's comes with different features such as DB 12c will be installed and it's support RAC installation Features immediately which mean you don't have to install EBS on Single node then convert to RAC.

Like the above pic, well everything done successfully for DB installation without any problem same as below :-

The installation is multi - node which mean Apps on different server, when trying to connect APPS to RAC DB each time the same error appered with no sense which is

ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

Be noted that the DB is reigster with SCAN and tnsping is working , and i can access DB using TOAD thru SCAN or Local Listener

Therefore after multi try of the installation and fix the error, i choose the old way which is Single node and covert to RAC and the funny thing it's working without any issue.

If there is any idea about this error please comment below maybe i missed something

Tuesday, October 4, 2016

Before start reading this post you should know that Oracle is highly recommended using DNS while configure Oracle RAC include to this it will make your life easier in case any one wants to change the IP's.

However today i was working on EBS installation using startCD51 and this is allow me to install EBS directly on RAC but the customer database RAC not configured to use DNS so everytime i was trying to install EBS

The following Error shown up in my face :-

INFO: Verification Result for Node:RAC1,RAC2WARNING: Result values are not available for this verification taskINFO: *********************************************INFO: Task resolv.conf Integrity: This task checks consistency of file /etc/resolv.conf file across nodesINFO: Severity:CRITICALINFO: OverallStatus:OPERATION_FAILEDINFO: -----------------------------------------------